"Koichi Mikami,Kumiko Fujita,Kazuki Wakabayashi,Shigekazu Ito","[2,3]Wittig Rearrangement of ���f-Hydroxyethyl Bis-Allylic Ethers: Highly Regiospecific Entry to Singly Dehydroxylated 19-Nor-1(or 3),25-dihydroxy-vitamin D",,"Heterocycles",,"Vol. 82 (Special issue for Prof. A. Eschenmoser)","no. 2","pp. 1163-1170",2011,Jan.